EP2335452A1 - Objet transparent présentant une zone transparente pouvant être chauffée électriquement, structurée, délimitée localement, procédé pour sa production, et son utilisation - Google Patents

Objet transparent présentant une zone transparente pouvant être chauffée électriquement, structurée, délimitée localement, procédé pour sa production, et son utilisation

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Publication number
EP2335452A1
EP2335452A1 EP09748060A EP09748060A EP2335452A1 EP 2335452 A1 EP2335452 A1 EP 2335452A1 EP 09748060 A EP09748060 A EP 09748060A EP 09748060 A EP09748060 A EP 09748060A EP 2335452 A1 EP2335452 A1 EP 2335452A1
Authority
EP
European Patent Office
Prior art keywords
transparent
structured
region
coating
electrically
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09748060A
Other languages
German (de)
English (en)
Other versions
EP2335452B1 (fr
Inventor
Mitja Rateiczak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Priority to PL09748060T priority Critical patent/PL2335452T3/pl
Publication of EP2335452A1 publication Critical patent/EP2335452A1/fr
Application granted granted Critical
Publication of EP2335452B1 publication Critical patent/EP2335452B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H05B3/86—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields the heating conductors being embedded in the transparent or reflecting material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B60S1/0833—Optical rain sensor
    • B60S1/0844—Optical rain sensor including a camera
    • B60S1/0848—Cleaning devices for cameras on vehicle
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/013—Heaters using resistive films or coatings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • Transparent article having a localized, structured, electrically heatable, transparent region, process for its preparation and its use
  • the present invention relates to a novel transparent article comprising a transparent, electrically insulating substrate having a large-area, structured, electrically conductive, transparent coating, comprising at least one localized, structured, electrically heatable, transparent region.
  • the present invention relates to a novel process for producing a transparent article, comprising a transparent substrate having a large-area, structured, electrically conductive, transparent coating, containing at least one localized, structured, electrically heatable, transparent region.
  • the present invention relates to the novel use of the novel transparent article, comprising a transparent, electrically insulating substrate having a large-area, structured, electrically conductive, transparent coating, containing at least one localized, structured, electrically heatable, transparent region, and the aid transparent article produced by the novel process, comprising a transparent substrate having a large-area, structured, electrically conductive, transparent coating, containing at least one localized, structured, electrically heatable, transparent region.
  • Laminated safety glass panes, in particular windshields, for motor vehicles containing electrically conductive, transparent layers and methods for their manufacture are disclosed, for example, in patent applications and patents US 4,010,304, US 4,385,226, US 4,565,719, US 4,655,811, US 4,725,710, US 4,985,312, US 5,111 , 329, US 5,324,374, EP 0 638 528 A1, EP 0 718 250 A2, DE 697 31 268 T2, WO 00/72635 A1 and US 7,223,940 B2.
  • the electrically conductive, transparent layers can serve for the full-surface heating of the laminated safety glass panes or as IR radiation-reflecting or absorbing layers.
  • Modern windshields for motor vehicles often have so-called camera or sensor fields through which a camera or sensor "looks through” the windshield. These fields must always be kept free from fogging by water or ice so that the cameras and sensors can perform their function.
  • tracks can be incorporated for electrical heating. Although these tracks can be operated with an on-board voltage of 12 to 14 V, but they can cause unwanted shadowing.
  • the patent application WO 00/72635 A1 discloses a windscreen which can be electrically heated over the entire surface and which contains a window which is free of the electrically conductive coating. This window is used for data transmission through the windshield. However, this window is not heated and therefore difficult or impossible to keep fogging.
  • the present invention is based on the object to overcome the disadvantages of the prior art and to provide new transparent articles, in particular new laminated safety glass, especially new windshields, which are coated with a transparent coating of an electrically conductive material, wherein at least one localized, electrically heatable, transparent area, in particular a camera or sensor field is located.
  • This transparent region should be heatable with a comparatively low voltage, in particular a voltage of 12 to 14 V, and should not cause unwanted shadowing.
  • no additional measures, such as the installation of additional electrical and electronic components be necessary.
  • the electrically heated, transparent areas are to be quickly freed even in winter or cold operation of a fog of moisture and ice and can be reliably kept fog free.
  • the transparent, electrically heatable area produced by the new process should be fully functional even without additional electrical and electronic components.
  • the electrically heated, transparent areas are to be quickly freed of moisture and ice in winter or cold operation and can be reliably kept fog-free and cause no more shadowing.
  • the present invention was based on the object, a new use for the new transparent articles and the transparent objects produced by means of the new method in means of transport for transport by land, air and water and in the construction, furniture and equipment sector
  • the transparent objects in question in spatially limited, transparent areas can be quickly freed from fogging and ice condensation in winter or cold operation and can be kept reliably fog-free and no longer cause shadowing ,
  • a structured, transparent coating (2) which contains or consists of at least one electrically conductive material (2.1), which covers the transparent substrate (1) over a large area, a structure which is free from electrically conductive material (2.1), electrically insulating regions ( 2.2) is formed, and at least one localized, structured, electrically heatable, transparent region (2.3) and at least one electrically conductive, transparent region (2.4) includes, as well
  • the coating (2) is structured in such a way and the electrical contacts (3) are connected in such a way that when a voltage is applied at least through the region (2.3) a current flows.
  • the new transparent article which comprises at least one substrate (1), a coating (2) and electrical contacts (3), is referred to as "article according to the invention".
  • the structured coating (2) has at least one localized, structured, electrically heatable, transparent region (2.3) and at least one electrically conductive, transparent region (2.4), and
  • the object according to the invention no longer had the disadvantages of the prior art but that the at least one locally limited, electrically heatable, transparent region, in particular a camera or sensor field, of the structured, transparent coating with a comparatively low voltage, in particular a voltage of 12 to 14 V, was heatable and caused no unwanted shading.
  • the at least one locally limited, electrically heatable, transparent region, in particular a camera or sensor field, of the structured, transparent coating with a comparatively low voltage, in particular a voltage of 12 to 14 V was heatable and caused no unwanted shading.
  • no additional measures, such as the installation of additional electrical and electronic components were necessary.
  • the electrically heated, transparent area could be quickly freed even in winter or cold operation by a fog of moisture and ice and kept reliably fog-free.
  • the inventive method no longer had the disadvantages of the prior art, but in a simple and very reproducible manner in large quantities transparent objects provided that had a structured, transparent coating, wherein at least in the coating a transparent, with relatively low voltage electrically heated area, in particular a camera and the sensor field, without unwanted shadowing was.
  • the transparent, electrically heated areas produced by the new process were fully functional even without additional electrical and electronic components.
  • the electrically heated, transparent areas could Even in winter operation or cold operation quickly freed from fogging of moisture and ice and be kept reliably fog-free.
  • the objects according to the invention and the transparent articles produced by the process according to the invention within the scope of the inventive use outstanding for use in means of transport for transport on land, air and water and in the construction, furniture and equipment sector were suitable.
  • the objects according to the invention and the transparent objects produced by the process according to the invention in localized, electrically heatable, transparent areas free of unwanted shading could be quickly freed from moisture and ice fogging and reliably fog-free even in winter or cold operation.
  • the articles of the invention are transparent. This means that they are transparent at least in individual regions, but preferably in total, for electromagnetic radiation, preferably electromagnetic radiation of a wavelength of 300 to 1,300 nm, but especially for visible light.
  • “Permeable” means that the transmission, in particular for visible light, is> 50%, preferably> 75% and in particular> 80%.
  • the articles of the invention may have different three-dimensional shapes. Thus, they may be planar or slightly or strongly curved or curved in one or more directions, or may have the shape of regular or irregular three-dimensional bodies such as spheres, cylinders, cones, triangular or quadrangular pyramids, cuboids, cuboids, icosahedra, etc. In particular, they are planar or slightly curved or curved in one or more directions of the space.
  • the size of the objects according to the invention can vary widely and depends on the respective intended use in the context of the use according to the invention.
  • the objects according to the invention can have a size of a few centimeters to several meters.
  • the planar or slightly or strongly bent or curved in one direction or several directions of the space or curved objects may have an area in the order of 100 cm 2 to 25 m 2 , preferably> 1 m 2 , have.
  • the objects according to the invention may also have surfaces such as windscreens, side windows and rear windows for motor vehicles or large-area windows, as used in the construction industry, usually have.
  • the objects according to the invention can have perforations. These can be used to hold devices for holding, for connection to other objects and / or for the passage of lines, in particular electrical lines.
  • the article according to the invention contains at least one transparent, electrically insulating substrate.
  • the substrate for electromagnetic radiation of a wavelength of 300 to 1,300 nm, but in particular for visible light, a high transmission, preferably a transmission> 50%, preferably> 75%, more preferably> 85% and in particular> 95%.
  • the transparent, electrically insulating substrates may have any three-dimensional shape which is predetermined by the three-dimensional shapes of the articles according to the invention which they contain.
  • the three-dimensional shape has no shadow zones, so that it can be uniformly coated in particular from the gas phase.
  • the substrates are planar or slightly or strongly bent in one direction or in several directions. In particular, planar substrates are used.
  • the transparent, electrically insulating substrates may be colorless or colored.
  • suitable materials for producing transparent, electrically insulating substrates are glass and clear plastics, preferably rigid clear plastics, in particular polystyrene, polyamide, polyester, polyvinyl chloride, polycarbonate or polymethylmethacrylate.
  • the thickness of the transparent, electrically insulating substrates can vary widely and are thus perfectly adapted to the requirements of the individual case.
  • glasses with the standard glass thicknesses of 2, 3, 4, 5, 6, 8, 10, 12, 15, 19 and 24 mm are used.
  • the size of the transparent, electrically insulating substrates can vary widely and depends on the size of the articles according to the invention which contain them. Accordingly, the sizes described above are preferably used.
  • the transparent, electrically insulating substrates are coated with a structured, transparent coating.
  • Transparent here also means that the structured, transparent coatings for electromagnetic radiation, preferably electromagnetic radiation of a wavelength of 300 to 1,300 nm, but in particular for visible light, are permeable.
  • Permeable means that the transmission, in particular for visible light, is> 50%, preferably> 75% and in particular> 80%.
  • Particularly preferred are structured, transparent coatings which are impermeable to IR radiation, i. that is, they reflect or absorb IR radiation.
  • “Structured” means that the transparent coating is subdivided into at least two, in particular at least three, regions delimited from one another.
  • the structured, transparent coating contains or consists of at least one electrically conductive material.
  • the structured, transparent coating may consist of one layer of an electrically conductive material or of at least two layers of two different electrically conductive materials.
  • the structured, transparent coating can be constructed from at least one layer of an electrically conductive material and at least one layer of a transparent, dielectric material.
  • the structured, transparent coating may consist of a first layer of a transparent, dielectric material, a layer of an electrically conductive material, and a second layer of the same or another transparent, dielectric material, which lie one above the other in the stated sequence.
  • the structured, transparent coating it is also possible for the structured, transparent coating to consist of at least three transparent, dielectric layers and at least two electrically conductive layers which lie alternately one above the other, at least one transparent, dielectric layer being located between the electrically conductive layers.
  • suitable electrically conductive materials are metals having high electrical conductivity, such as silver, copper, gold, aluminum or molybdenum, in particular silver or palladium-alloyed silver, and transparent, electrically conductive oxides (TCO), as described, for example, in US Pat U.S. Patent Application US 2007/029186 A1 on page 3, paragraph [0026], and page 4, paragraph [0034].
  • TCO transparent, electrically conductive oxides
  • the TCOs are preferably indium tin oxide (ITO), fluorine tin oxide (FTO), aluminum and, if appropriate, also boron and / or silver-doped aluminum zinc oxide (aluminum zinc oxide, AZO), tin zinc oxide or antimony-doped tin dioxide (Antimony Tin Oxide, ATO).
  • the TCOs Preferably, have a resistivity p of 1.0 to 5.0 x 10 -3 ⁇ x m, preferably having a sheet resistance R n of 0.5 ⁇ / ⁇ to 15 ⁇ / °.
  • the thickness of the structured, transparent coating can vary widely and thus be perfectly adapted to the requirements of the individual case. It is essential that the thickness of the structured, transparent coating must not become so high that it becomes impermeable to electromagnetic radiation, preferably electromagnetic radiation of a wavelength of 300 to 1,300 nm and in particular visible light.
  • the thickness is 20 nm to 100 microns.
  • the structured, transparent coating consists of a metal
  • its thickness is preferably 50 to 500 nm, preferably 75 to 400 nm and in particular 100 to 300 nm.
  • the structured, transparent coating consists of a TCO, its thickness is preferably 100 nm to 1.5 ⁇ m, preferably 150 nm to 1 ⁇ m and in particular 200 nm to 500 nm.
  • the structured, transparent coating comprises at least one transparent, dielectric layer and at least one layer of a metal, its thickness is preferably 20 to 100 ⁇ m, preferably 25 to 90 ⁇ m and in particular 30 to 80 ⁇ m.
  • transparent plastic films preferably based on polyamide, polyurethane, polyvinyl chloride, polycarbonate and polyvinyl butyral, in particular polyurethane, which are coated with at least one of the electrically conductive materials described above.
  • the structured, transparent coating covers the transparent, insulating substrate over a large area.
  • at least 50%, preferably at least 70%, more preferably at least 80% and in particular at least 90% of a surface of the transparent, insulating substrate is covered by the structured, transparent coating.
  • the structured, transparent coating can also completely cover the transparent, insulating substrate.
  • the structured, transparent coatings may cover the substrates in such a way that they are surrounded by an electrically insulating region which is free of electrically conductive material.
  • This electrically insulating region is preferably located in the edge regions of the electrically insulating, transparent substrates.
  • the width of the electrically insulating region can vary widely and therefore be excellently adapted to the requirements of the individual case.
  • the width is 0.5 to 10 cm, preferably 0.5 to 7 cm and in particular 0.5 to 5 cm.
  • the electrically insulating region may be covered by a decorative coating.
  • the structured, transparent coating has a structure that is formed by electrically insulating regions that are free of electrically conductive material.
  • the structure comprises at least one, in particular one, localized, structured, electrically heatable, transparent region and at least one electrically conductive, transparent region.
  • “Localized” means that the particular structured, electrically heatable, transparent region has an area smaller than the area of the electrically conductive transparent region. “Structured” means that even the localized, electrically heatable, transparent region has a structure that is formed by electrically insulating regions.
  • Electrode heatable means that the localized, structured, transparent region has such a high electrical resistance that, when an electrical voltage is applied, preferably the on-board voltage usually used in motor vehicles, in particular a voltage of 12 to 14 V, the area heats up ,
  • the structure of the localized, electrically heatable, structured, transparent area is designed on a case-by-case basis so that the electrical resistance does not become so high as to damage the area due to overheating and / or the risk of burning when touching the area with the bare skin consists.
  • the structure and the electrical resistance are designed such that the region heats to 30 to 70 ° C. when a voltage is applied.
  • the localized, electrically heatable, structured, transparent regions may have different structures on a case-by-case basis, so that they can be excellently adapted to the requirements of the individual case.
  • the structures preferably have the shape of a meander-shaped conductor track.
  • the meander-shaped conductor tracks can have different dimensions.
  • the dimensions depend primarily on the particular electrically conductive material used and its conductivity, its electrical resistivity, its sheet resistance and the temperature to which the localized, electrically heatable, structured, transparent regions are to be heated. The person skilled in the art can therefore determine the dimensions on the basis of his specialist knowledge, if appropriate with the aid of a few orienting experiments in individual cases.
  • the meander-shaped conductor tracks have a width of 0.5 mm to 10 cm. Preferably, their length is 10 cm to 6 m.
  • the structured, transparent coating is connected to electrical contacts. Overall, it is structured in such a way that when a voltage is applied to the electrical contacts, a current flows, at least through the localized, electrically heatable, structured, transparent region.
  • the localized, electrically heatable, structured, transparent region is electrically insulated from the electrically conductive, transparent region.
  • the electrically conductive, transparent region need not be further structured in itself.
  • the localized, electrically heatable, structured, transparent region is connected to electrical contacts, so that when a voltage is applied, a current flows through the conductor track described above. This can be ensured by the fact that the poles of the contacts are separated by an electrically insulating region, so that the current must take the detour via the conductor track.
  • the localized, electrically heatable, structured, transparent region is in electrical contact with the electrically conductive, transparent region, wherein the electrical contacts are preferably connected outside of the locally limited, electrically heatable, structured, transparent region.
  • the electrically conductive, transparent region per a present, localized, electrically heatable, structured, transparent region consists of two partial regions, of which one partial region with the electrical input of the localized region and the other Part area is in contact with the electrical output of the localized area. This ensures that when a voltage is applied through the localized area, a current flows.
  • the electrical contacts may be conventional and known direct contacts or inductive contacts comprising a contact bridge and a coil.
  • suitable direct electrical contacts with which a smooth transition from the very thin, structured, transparent coating to the usual dimensions of cables and plugs can be made are disclosed in US Pat. No. 7,223,940 B2, column 1, line 55, to column 2, Line 43, and column 6, line 48, to column 9, line 59, in connection with the figures 1 to 9 known.
  • the coil may consist of electrically insulated, thin wires.
  • the coil is integrated in the structured, transparent coating. This means that it is part of the structure of the transparent coating and is formed by a spiral-shaped, electrically insulating region which is free of electrically conductive material. Between the turns of this helical, electrically insulating region is the structured, transparent coating in the form of a continuous conductor track.
  • the coil is located within the localized, structured, electrically heatable, transparent region and is integrated in such a way that, when a voltage is applied, the current must take the detour via the conductor track described above.
  • the coil is located within a portion of the electrically conductive, transparent region which is in electrical contact with the electrical output or input of the above-described trace of the localized, structured, electrically heatable, transparent region.
  • the electrical contact bridge is located outside the structured, transparent coating above the coil and protrudes in the case of the first embodiment in the area above the electrical output region of the conductor track. In the case of the second embodiment, it projects into the region above the other subregion of the electrically conductive, transparent region.
  • the structure of the structured, transparent coating described above is formed by electrically insulating regions that are free of electrically conductive material.
  • the dimensions of the electrically insulating areas can vary widely and can therefore be perfectly adapted to the requirements of the individual case. Preferably, they have a width of 100 nm to 5 mm, preferably 150 nm to 5 mm, more preferably 200 nm to 5 mm and in particular 250 nm to 5 mm.
  • the depth of the electrically insulating areas can also vary and therefore be perfectly adapted to the requirements of the individual case. It is essential that the areas no longer contain electrically conductive material.
  • the electrical insulating regions have a depth ranging from the surface of the structured, transparent coating to the surface of the electrically insulating, transparent substrate.
  • the cross-sectional profile of the electrically insulating regions can also be varied and adapted to the requirements of the individual case. It is essential that the distance between the walls of the areas is not so low that there is a risk of short circuits.
  • the electrically insulating regions have a rectangular cross-sectional profile.
  • the electrically insulating, transparent substrate consists of a glass
  • the at least one further layer is selected from the group consisting of transparent barrier layers and transparent, adhesion-promoting layers.
  • Suitable transparent barrier layers for preventing the diffusion of ions, in particular alkali metal ions, are preferably made of dielectric materials, in particular of nitrides, oxides and oxynitrides of silicon and / or aluminum. Preferably, they have a thickness of 30 to 300 nm.
  • Suitable transparent, adhesion-promoting layers likewise preferably consist of dielectric materials, in particular of mixed oxides of zinc and tin. Preferably, they have a thickness of 3 to 100 nm.
  • the transparent barrier layer is connected directly to the surface of the electrically insulating, transparent substrate.
  • the article according to the invention can be produced in a great variety of ways.
  • a mask can be placed on the electrically insulating, transparent substrate that corresponds to the desired structure of the electrically insulating regions, which are free of electrically conductive material. Subsequently, at least one electrically conductive material can be deposited on the substrate from the gas phase, wherein the methods described below can be used. This results directly in the above-described structured, transparent coating. Subsequently, the mask is removed, and the structured, transparent coating is connected to electrical contacts as described below, so that current flows when a voltage is applied, at least through the localized, structured, electrically heatable transparent region.
  • the inventive method but especially in the production of the article of the invention.
  • the electrically insulating, transparent substrate can be thermally treated, cleaned, in particular degreased, and / or polished. Subsequently, at least one of the barrier layers and / or adhesion-promoting layers described above can be applied, wherein the methods described below for the deposition of thin layers from the gas phase can be used.
  • At least one electrically conductive material is applied over a large area to the transparent, electrically insulating substrate or to the surface of a layer located thereon, so that a transparent, electrically conductive coating results, which contains or consists of the electrically conductive material.
  • known methods and devices such as e.g. gas phase deposition, liquid phase application, or lamination of plastic films coated with electrically conductive materials.
  • the transparent electrically conductive coating is deposited from the gaseous phase using conventional and known methods such as chemical vapor deposition (CVD) or physical vapor deposition (PVD) as well as the corresponding devices suitable therefor.
  • CVD processes are spray pyrolysis, chemical vapor deposition and sol-gel chromatography.
  • PVD processes are electron beam evaporation and vacuum sputtering.
  • sputtering methods are used.
  • Sputtering is a common and well-known method for producing thin layers of materials that are not easily vaporized.
  • the surface of a solid of suitable composition, the so-called target is atomized by bombardment with high-energy ions from low-pressure plasmas, such as oxygen ions (O + ) and / or argon ions (Ar + ), or neutral particles, after which the sputtered materials on substrates in in the form of thin layers (see Römpp Online, 2008, "Sputtering").
  • the high-frequency sputtering, short RF sputtering, or the magnetic field-assisted sputtering, short magnetron sputtering (MSVD) is applied.
  • Suitable sputtering methods are described, for example, in US Pat. Nos. 7,223,940 B2, column 6, lines 25 to 38, and US 4,985,312, column 4, page 18, to column 7, line 10, or in the German translation of European patent EP 0 847 965 B1 with the file reference DE 697 31 268 T2, page 8, paragraph [0060], and page 9, paragraph [0070], to page 10, paragraph [0072] described.
  • the transparent, electrically conductive coating is structured by removing it in places so that electrically insulating regions are produced which are free of electrically conductive material.
  • the electrically conductive material can be removed mechanically, thermally and / or by irradiation with electromagnetic radiation.
  • An advantageous method of mechanical removal that works very precisely and can provide particularly fine electrically insulating areas is ultrasonic hammering.
  • An advantageous method for removing by thermal action and / or by irradiation with electromagnetic radiation which also works very precisely and can provide particularly fine electrically insulating areas, is the irradiation with a laser beam, as described for example in European patent applications EP 0 827 212 A2 and EP 1 104 030 A2. If the structured, transparent coating is to be surrounded by an electrically insulating region which is free of electrically conductive material, the electrically conductive material in this region is preferably removed by mechanical methods such as grinding.
  • this electrically insulating region can be provided with a decorative coating in order to optically cover the transition from the electrically insulating region to the structured, transparent coating.
  • the structured, transparent coating can be treated with a liquid or gaseous, in particular liquid, etchant in order optionally to eliminate even in the electrically insulating regions into existing residues of electrically conductive material.
  • the liquid etchants are preferably selected from the group consisting of liquid organic compounds, liquid inorganic compounds, solutions of solid, liquid and gaseous, organic and inorganic compounds in organic solvents and solutions of solid, liquid and gaseous, organic and inorganic compounds in water, selected. Preference is given to using solutions of organic and inorganic acids and bases in water. Volatile organic and inorganic acids, in particular inorganic acids, are preferably used.
  • the structured, transparent coatings are rinsed with a rinsing agent such as ultrapure water.
  • a rinsing agent such as ultrapure water.
  • the electrically insulating, transparent substrates which have a structured, transparent coating, can be deformed, in particular bent or curved, at higher temperatures.
  • the height of the temperatures depends on the materials of which the respective insulating, transparent substrates and / or the structured, transparent coatings consist. If they contain plastic or consist of it, the temperature must not be set so high that the material melts and / or thermally is damaged. Preferably, the temperature in these cases above the glass transition temperature and below 200 0 C. In the case of substrates made of glass, the temperature is between 500 and 700 0 C, in particular 550 and 650 ° C.
  • the structured, transparent coating is connected to electrical contacts, preferably to the electrical contacts described above.
  • the structuring described above takes place in such a way that the structured, transparent coating has at least one localized, structured, electrically heatable, transparent region and at least one electrically conductive, transparent region, so that when an electrical voltage is applied at least the localized, structured, electrically heated, transparent region flows a current.
  • the transparent articles according to the invention and the transparent articles produced by means of the method according to the invention can contain further functional layers and further electrically insulating, transparent substrates.
  • suitable functional layers are coloring layers, layers which increase the structural strength of the articles according to the invention, light-reflecting layers and antireflection layers.
  • layers which increase the structural strength of the articles of the invention are used. These may be adhesive layers, composite films, mechanical energy absorbing films and self-healing films of casting resins, such as curable epoxy resins, or thermoplastics, such as polyvinyl butyral, PVB, poly (ethylene-vinyl acetate), EVA, polyethylene terephthalate, PET, polyvinyl chloride, PVC , ionomer resins based on ethylene and / or propylene and alpha, beta-unsaturated carboxylic acids or polyurethane, PU, as described, for example, in the German translation of the European patent EP 0 847 965 B1 with the file reference DE 697 31 2 168 T2, page 8 , Paragraphs [0054] and [0055], or international patent applications WO 2005/042246 A1, WO 2006/034346 A1 and WO 2007/149082 A1. If necessary, the areas lying directly above the localized, structured, electrically heatable, transparent areas can be left out of casting
  • the further electrically insulating, transparent substrates are preferably the substrates described above, in particular substrates made of glass.
  • the further electrically insulating, transparent substrates are adapted in their area and shape to the objects according to the invention, so that they can be easily connected to them.
  • the resulting articles according to the invention which contain the additional layers and / or substrates, are preferably constructed in such a way that the structured, transparent coating is in each case located in the interior of the articles according to the invention.
  • the objects according to the invention and the transparent articles produced by the method according to the invention are advantageously used in means of transport for land, air and water, preferably in motor vehicles, such as cars, trucks and trains, in aircraft and in ships and in the furniture, equipment and construction sector, preferably used as transparent components.
  • tempered safety glass panes and laminated safety glass panes as window panes in locomotion means, in particular as windshields for motor vehicles, especially passenger cars, as architectural components in the construction sector, in particular for overhead glazing for roofs, glass walls, facades, window panes, glass doors, balustrades , Parapet glazing, skylights or walk-in glass, as well as components in furniture and appliances, especially in refrigerators and freezer cabinets used.
  • the tempered safety glass sheets and the laminated safety glass sheets according to the present invention have localized low-voltage electrically heatable transparent portions free from shadowing, they are not only Excellent as fog-free camera and sensor fields for the passage of information in the form of electromagnetic radiation from "outside to inside” suitable, but also for the passage of information in the form of electromagnetic radiation from "inside out”.
  • a sensor for distance measurement in the interior of a motor vehicle behind a pane according to the invention is not impaired in its function even in winter.
  • the view remains on an object that is behind a pane according to the invention, transparent refrigerator door or transparent display door, such.
  • a clock or a display even in winter or in cold weather clear.
  • FIGS. 1 to 3 are schematic representations intended to illustrate the principle of the invention. The schematic representations therefore need not be true to scale. The illustrated proportions therefore do not have to correspond to the proportions used in practice of the invention in practice.
  • FIG. 1 shows a first alternative for the second embodiment of the invention.
  • Figure 2 shows a second alternative for the second embodiment of the invention.
  • FIG. 3 shows an alternative for the first embodiment of the invention.
  • the substrates (1) of the objects 1 to 3 according to the invention are float glass panes of the dimensions as used, for example, for windshields, side windows and rear windows in vehicle construction, in small, medium or large-area windows in the furniture, equipment or construction sector.
  • the dimensions can be several square centimeters to several square meters.
  • the coatings (2) of the articles 1 to 3 according to the invention are each a coating, as described in the German translation of the European patent EP 0 847 965 B1 with the file reference DE 697 31 2 168 T2, Example 1, page 9 Paragraph [0063] until page 11, paragraph [0080].
  • This layer contains two layers of silver as the electrically conductive material (2.1).
  • the areas (2.2) complementary to the printed conductors (2.3.1), the region (2.4) and the subregions (2.4.1) and (2.4.2) are inscribed in these layers.
  • the coatings (2) of the articles 1 to 3 according to the invention are surrounded by an electrically insulating region (4) having a width in the range from 0.5 to 10 cm.
  • the electrically insulating regions (2.2) of the articles 1 to 3 according to the invention have a depth which corresponds to the thickness of the coatings (2). Their width is in the range of 100 nm to 5 mm.
  • the localized, structured, electrically heatable, transparent regions (2.3) of the objects 1 to 3 according to the invention are each of a meander-shaped conductor track (2.3.1) having a length in the range of 10 cm to 6 m and a width in the region of 0.5 mm to 10 cm and the here to be complemented electrically insulating regions (2.2) formed.
  • the region (2.3) is electrically insulated from the electrically conductive, transparent region (2.4).
  • the object 3 according to the invention contains only one region (2.4).
  • the input and output of the respective area (2.3) are in electrical contact with a respective subarea (2.4.1) or (2.4.2), which are separated from one another by an area (2.2).
  • the one direct electrical contact (3) is connected to the sub-area (2.4.1), whereas the other direct electrical contact (3) is connected to the sub-area (2.4.2).
  • an electrical voltage of 12 to 14 V is applied, a current flows through the conductor (2.3.1), so that the region (2.3) heats up to 50 ° C.
  • the article (2) according to the invention contains an inductive electrical contact (3) comprising a coil (3.2) and a contact bridge (3.1).
  • the coil (3.2) is inscribed into the partial area (2.4.1) of the coating (2) by means of a continuous spiral-shaped area (2.2).
  • the electrical contact bridge is located without contact above the coating (2) and extends from the center of the coil (3.2) to the partial area (2.4.1).
  • an electrical voltage of 12 to 14 V is applied, a current flows through the conductor (2.3.1), so that the region (2.3) heats up to 50 ° C.
  • the direct electrical contacts (3) are connected to the region (2.3) such that when an electrical voltage of 12 to 14 V is applied, an electric current flows through the conductor track (2.3.1), so that the Area (2.3) heated to 50 0 C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Surface Heating Bodies (AREA)
  • Surface Treatment Of Glass (AREA)
  • Manufacturing Of Electric Cables (AREA)

Abstract

L'invention concerne une objet transparent, conforme à la figure 1, comprenant : au moins un substrat transparent, électriquement isolant (1), un revêtement transparent structuré (2) qui renferme au moins un matériau électro-conducteur (2.1) ou qui est constitué par un tel matériau, qui recouvre en grande partie le substrat transparent isolant (1), une structure qui est formée de zones électriquement isolantes (2.2), exemptes de matériau électro-conducteur (2.1), et au moins une zone (2.3) transparente, pouvant être chauffée électriquement, structurée, délimitée  localement, et au moins une zone (2.4) transparente, électro-conductrice (2.4), ainsi qu'au moins un contact électrique (3) pour l'application d'une tension électrique sur le revêtement (2). L'invention est caractérisée en ce que le revêtement (2) est structuré de telle façon, et le contact électrique (3) connecté de telle façon que lors de l'application d'une tension, au moins un courant circule à travers la zone (2.3). L'invention concerne en outre un procédé pour la production de l'objet précité et l'utilisation dudit objet.
EP09748060.2A 2008-10-15 2009-10-13 Objet transparent présentant une zone transparente pouvant être chauffée électriquement, structurée, délimitée localement, procédé pour sa production, et son utilisation Active EP2335452B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09748060T PL2335452T3 (pl) 2008-10-15 2009-10-13 Przezroczysty przedmiot z ograniczonym lokalnie, strukturyzowanym, ogrzewanym elektrycznie, przezroczystym obszarem, sposób jego wytwarzania i jego zastosowanie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008051730A DE102008051730A1 (de) 2008-10-15 2008-10-15 Transparenter Gegenstand mit einem örtlich begrenzten, strukturierten, elektrisch beheizbaren, transparenten Bereich, Verfahren zu seiner Herstellung und seine Verwendung
PCT/EP2009/063309 WO2010043598A1 (fr) 2008-10-15 2009-10-13 Objet transparent présentant une zone transparente pouvant être chauffée électriquement, structurée, délimitée localement, procédé pour sa production, et son utilisation

Publications (2)

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EP2335452A1 true EP2335452A1 (fr) 2011-06-22
EP2335452B1 EP2335452B1 (fr) 2016-02-10

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US (1) US20110266275A1 (fr)
EP (1) EP2335452B1 (fr)
JP (1) JP5575781B2 (fr)
KR (1) KR101411104B1 (fr)
CN (1) CN102187733B (fr)
DE (1) DE102008051730A1 (fr)
EA (1) EA023915B1 (fr)
ES (1) ES2563636T3 (fr)
PL (1) PL2335452T3 (fr)
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WO (1) WO2010043598A1 (fr)

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Also Published As

Publication number Publication date
JP2012506112A (ja) 2012-03-08
PT2335452E (pt) 2016-03-31
CN102187733A (zh) 2011-09-14
KR101411104B1 (ko) 2014-06-27
KR20110070857A (ko) 2011-06-24
EA201170568A1 (ru) 2011-10-31
EA023915B1 (ru) 2016-07-29
DE102008051730A1 (de) 2010-04-22
PL2335452T3 (pl) 2016-08-31
EP2335452B1 (fr) 2016-02-10
CN102187733B (zh) 2014-11-26
JP5575781B2 (ja) 2014-08-20
WO2010043598A1 (fr) 2010-04-22
US20110266275A1 (en) 2011-11-03
ES2563636T3 (es) 2016-03-15

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